Wrench



1. DOBRZANSKI.

WRENCH.

APPLlcAion man MAR. 8, 1922.

1 427 364 PatentedAug;29,1922.

2 SHEETS-SHEET l.

ELqv Emi; ,lql

Snom/Lto@ rif .qrzamska' www 614 I. DOBRZANSKI.

{ WRENCH. APPLICATION FILED MAR. 3, i922.

1 ,427, 3 64, Patented Aug. 29, 1922.

l 2f @f2 0 JOHN DOBRZANSKI, 0F MOLLENAWER, PENNSYLVANIA.

WRENCH.

Specication onf Letters Patent. Patented Aug. 29, 1922i.

Applicationlled March 8, 1922. Serial No. 542,088.

T0 all whom it may con-cera:

Be it known that I, JOHN DonnZANsKI, a citizen of Poland, residing at Mollenawer, in the county of Allegheny and State of Pennsylvania, have invented certain new' and useful lmprovements in Wrenches, of which the following is a specification.

This invention relates to certain new and useful improvements in wrenches, particularly of that kind embodying jawA members adapted to operate upon either round or square work wherein an adjustable inner jaw is provided for each wrench unit and wherein the same adjusting means may be operatively associated either with the adjustable jaw of the square work unit or the adjustable jaw of the round work unit.

The primary object of the invention is to providea wrench ofthe above kind which may be made particularly adapted for heavy work and which is of generally improved a'nd simplified construction.

Another object of the invention is to provide a wrench involving rigidly connected opposed shank members revolubly mounted at their juncture and having rigid jaws upon the outer ends of the same respectively adapted for dilierent types of work, each shank being provided with an adjustable jaw and each jaw being constructed to cooperate with the adjacent rigid jaw, means being provided to operatively adjust either inner jaw according to whichone is brought into operative relation with the adjusting means.

Still another object of the invention is to provide eflicient means for holding the Shanks against revolving when one of the adjustable inner jaws is operatively yconnected to the adjusting means.

With vthe above general objects in view and others that will appear as the nature of the invention is better understood. the same consists of the novel form, combination and arrangement of parts hereinafter more yfully described, shown in the accompanying drawings and claimed.

ln the drawings, wherein like reference characters designate corresponding parts throughout the several views,

F igurel is a side elevational view of a wrenchconstructed in accordance with the present invention, j

Figure 2 is a front elevational view thereof,

Figure 3 is a rear elevational view of the same, y

Figure Ll is a view partly in side elevation and partly in longitudinal section of the device shown in Fig. 1, f

Figure 5 is a horizontal sectional view taken on line 5-5 of Fig. l,

Figure 6 is a sectional view on line 64-6 of Fig. 5,

Figure is a. perspective view of one of the adjustable innerfjaws, and

Figure 8 is a view similar to Fig. ,7 of one ofthe jaw carrying slides or yokes.

Referring more in detail to the several views, the present invention embodiesy a handle member 5 khaving. a pair of body members or plates 6 attached to one rend thereof in spaced parallelrelation, the preferred form of attachment consisting in pivoting the adjacent ends of the plates AG as at 7 to the adjacent end of the handle with the adjacent. end edges of the plate 6cooperating with shoulders 8 on theadjacent end ofthe handle 5 for permitting slight andflimited pivotal movement of the plate 6 relative to the handle, which pivotal movement is resiliently resisted by means of suitable leaf springs 9 attached to the handle andbearing against the adjacent edgesof the plates. f

The inner end of the handle 5 is provided with a forward extension 10 to which is pivoted a U-shaped bracket 11, the cen.-y tral portion of which is apertured and has a headed stud 12 revolubly retained therein. The stem ofthe stud 12 projects through the bracket 11 and has one end of a rela-` tively long adjusting nut or sleeve` 13 rigidly secured by means of a set yscrew` 14;. This permits the stud 12 and adjustingnut 13 to swivel in the ybracket 11 in a manner and for a purpose which will presently become apparent.

A. pair of opposed wrench units denoted v connected and revolubly mounted between the free ends of the plate 6 as at 15, the wrench unit A including a shank 16 having a rigid jaw 17 upon the outer end thereof adapted for a particular kind of work such as square work, and the wrench unit B including a shank 18 integrally connected with the shank -16 at the pivot 15` and having a rigid jaw upon its outer end as at 19 adapted for another kind of work such as round work.

Each of the shanks 16 `and 18 has a slidable inner jaw 2O which embodies a slide or yoke 21 of U-shaped form embracing the adjacent shank and having the jaw member proper fastened thereto by means of a rivet 22 or the like, the jaw associated with the jaw 17 being of a type adapted for square work and the jaw 2O associated with jaw 19 b'eing of a type adjusted for roundl work. 1n other words, the jaws 17 and 20 correspond for certain work and the jaws 19 and 2O correspond for another kind of work.

1t will thus be seen that the present device embodies a pair of connected diiferential wrench units revolubly mounted so as to be selectively swung with one of the adjustable jaws above the adjusting nut 13, and each jaw 2O has its inner projecting portion 23 formed for reception within a socket 24 provided in the enlarged upper end 25 of an adjusting screw 26 which has its threaded portion screwed into the adjusting nut 13. The projecting portion 23 of the jaw 2O is notched as at 27 for reception of the hooked end of a spring pressed catch 28 carried by the enlarged end 25 of the screw 26 whereby the adjacent jaw 2O is held operatively connected to the adjusting screw. 1n this way a single adjusting means may be selectively engaged with either of the two adjustable inner aws for adjusting the latter. 1t will also be apparent that by releasing the latch 28, the adjacent innerjaw 2O may be slid toward its cooperating rigid jaw so as to remove the projecting portion 23 from the socket 24, whereupon the adjusting screw 26 and nuts 13 may be swung outwardly to substantially a horizontal position for permitting the wrench unit to be revolved so as to bring the other jaw 20 into position when required, whereupon this new adjustable jaw may be operatively engaged with the adjusting screw.

1n order yto hold the wrench units against swinging movement or to prevent relative displacement of the plate 6 and the shanks 16 and 18 when the wrench is in use, a pair of pins are slidably disposed through suit` able openings in the plate 6 as at 29 so as to engage opposite edges of the shank of the inoperative wrench unit in such manner as to effectively prevent any movement thereof on the pivot 15. 1n order that the pin 29 may be simultaneously withdrawn out of this shank, adjacent ends of said pins are rigidly connected by a plate or connecting member 30 which is adapted to engage the outer face of one of the plates 6 when the pins 29 are operative, and a turn button 31 is pivoted in the central portion of the connecting member 30 for releasably engaging keepers 32 at opposite sides thereof whereby the pins 29 are prevented from accidentally releasing the shank to be held thereby. @bviously by manual manipulation of the turn button 31 the pins may be released for being withdrawn so as to permit revolution of the wrench units. y

ln order to steady the free ends of the pins 29 and limiting the inward movements of the same suitable angle brackets 33 may be fastened upon the outer sides thereof for cooperation with the inner face of the other plate 6, and in order that the inoperative adjustable inner jaw may be prevented from undue sliding movement, a latch 3a is pivoted to an edge of one of the plates 6 so as to engage behind the yoke 21 of this adjustable jaw and hold the same toward its rigid jaw and engaged with the pin 29.

1n the present device, assuming that the parts are disposed in Fig. 1, by turning the nut sleeve 13 the round work jaw 2O may be moved to its desired relation withr respect to the cooperating jaw 19 for performing work upon round elements such as pipe sec tions or the like. Should it be desirableto employ the jaws 17 and 2O which are constructed for square work, the latch 28 may be released from the notch 27 of the operative adjustable inner jaw, after which the latter will be slid toward its cooperating rigid outer jaw for disengaging the eXtension 23 of the same from the socket 24 of the adjusting screw. rlhe latter together with the adjusting sleeve 13 may then be swung outwardly out of the path of the wrench unit and upon turning of the button 31 the same will be released from the keeper 32'so that the pins 29 may be withdrawn out of the path of the shank of the inoperative wrench unit. These wrench units may then be swung a partial revolution so as to bring the other or square work inner jaw in position after which the adjusting screw and nut is swung upwardly for engaging the extension 23 of the last named adjustable jaw in the socket 211 with the latch 28 engaging the notch 27 of said jaw. The pins 29 are then again moved inwardly so as to embrace the inoperative shank and hold the wrench elements against swinging movement, the turn button being engaged with the keepers 32 for preventing accidental displacement of the pins 29. The latch is then swung into engagement with the inoperative adjustable jaw for preventing the same from sliding on its shank. When this has been done the parts will appear as shown in Fig` 4 where the wrench is operatively set for operating upon square work.

F rom the foregoing description it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made in the invention without departing from the spirit and scope thereoil as claimed.

Vhat is claimed as new is f l. A wrench of the class described including a supporting structure, a pair of oppositely extending rigidly connected Wrench units revolubly mounted on said supporting structure and each including a shank having a slidable adjustable inner jaw and a rigid outer jaw, a single adjusting means carried by said supporting structure, and means to operatively connect either one ot said adjustable inner jaws to said adjusting means.

2. A wrench ot the class described including a supporting structure, a pair of oppositely extending` rigidly connected wrench units revolubly mounted on said supporting structure and each including a shank having a slidable adjustable inner jaw and a rigid outer jaw, a single adjusting' means carried by said supporting structure, means to operatively connect either one ol said adjustable inner aws to said adjusting means, said supporting structure including` a` handle having a pair of spaced plates between which the wrench units are movable and between which the inoperative wrench unit is adapted to be positioned., and means associated with said plate tor operatively engaging opposite edges of the shank ol the inoperative wrench unit for holding said wrench unit against pivotal movement.

A wrench of the class described including a supporting structurev` a pair of oppositely extending rigidly connected wrench units revolubly mounted on said supporting structure and each including a shank having a slidable adjustable inner jaw and a rigid outer jaw, a single adjusting means carried by said supporting structure, means to operatively connect either one of said adjustable inner jaws to said adjusting means, said supporting structure including a handle having a pair oi2 spaced plates between which the wrench units are movable and between which the inoperative wrench unit is adapted to be positioned, means associated with saidl plate for operatively engaging opposite edges of the shank o'lthe inoperative wrench unit for holding said wrench unit against pivotal movement, and Vmeans carried by one of said plates arranged to engage the adjustable jaw of the inoperative wrench unit to prevent sliding movement ot the .same when disposed between said plates.

t. A wrench of the class described including a supporting structure, a pair of oppositely extending rigidly connected wrench units revolubly mounted on said supporting structure and each including a shank having a slidable adjustable inner jaw and a rigid outer jaw, a single adjusting meanscarried by said supporting structure, means to operatively j ustable inner jaws to said adjusting means, said adjusting means kcomprising an adjusting sleeve nut internally threaded and having an adjusting screw threaded thereinto, said sleeve nut and screw being arranged in the path of movement of the wrench element when moving from operative to inoperative position and mounted tol swing out of the path oi said wrench element, the means for operatively connecting said adjusting` means to the operative adjustable jaw including a socketed member upon one end oi said adjusting screw and an extension upon said adjustable jaw arranged to lit within 5. A wrench of the class described including a supporting structure, a pair of oppositely extending rigidly connected wrench units revolubly mounted on said supporting struct-ure and each including a shank having a slidable adjustable inner jaw and a rigid outer jaw, a single adjusting means carried by said supporting structure, means to operatively connect either one of said adjustable inner jaws to said adjusting means, said adjusting means comprising an adjusting sleeve nut internally threaded and having an adjusting screw threaded thereinto, said sleeve nut and screw being arranged in the path of movement of the wrench element when moving from operative to inoperative position and mounted to swing out of the path of said wrench element, the means for operatively connecting said adjusting means to the operative adjustable jaw including a socketed member upon one end of said ad-" justing screw, an extension upon said adjustable aw arranged to lit within the socket of said screw, and said connecting means further embodying a latch carried by the socleted end of the screw to detachably engage the extension.

6. ln combination with a pair of rigidly connected revolubly mounted wrench elements each having an adjustable inner jaw and revoluble to bring one of said jaws selectively into operative position, of a single adjusting means ttor said jaws arranged to cooperate with the operative adjustable jaw, and means associated with said adjusting means to detachably connect the same with either of said adjustable jaws when operatively disposed In testimony whereorn l aiiix my signature.

JOHN DOBRZANSKI.

the socket of said screw. f

connect either one of said ad- 

